MAP31: Duality (Jenesis)

MAP31: Duality is the first secret map of Jenesis. It was designed by James Paddock (Jimmy) and uses the music track "Smells Like Burning Corpse (Remix)," by Jay Reichard (silentzorah), based on the music from TNT: Evilution MAP02 and MAP15. The par time is 4:25.

Essentials
The west side of this level is based on TNT: Evilution's, while the east and south sides are based on The Plutonia Experiment's.

Keycards
Kill the imps ahead and take the shotgun in front of the burning corpse, which will lower the surrounding water and reveal a couple of chaingunners. At the bottom go through the north doorway and push past some shotgun guys and imps to a junction with a water pool, then head west and climb the steps to find the red keycard being guarded by a few more monsters. Go back to the junction and head south to enter the courtyard from Human BBQ, then fight your way to the north-west corner and open the red key door here to get to the water pool room from that map, which is guarded by some zombies. Go to the north-east corner and press the skull switch to open some bars above and behind you, then kill the cacodemons, demons and pain elemental that are released on the west side before heading back to where you found the red keycard, then run north through the bars you just opened to land on the stone walkway below. Follow the walkway east and south until you see a square gray panel and open it to find an imp protecting the yellow keycard.

From the yellow key, follow the walkway west and drop down two steps to reach the blue keycard; it is used to open the nearby blue key door, but this should be saved for later. Go back to where you found the red keycard and open the yellow key door here to get to the platforms above the courtyard, then run to the outer walkway and follow it south and east, noting the chaingunners and Hell knights that are released as you go. Open the exit door to confront one or two chaingunners (or a revenant on Ultra-Violence and Nightmare skill levels), then press the skull switch behind them; it does not end the level, but opens to reveal a small cavern with imps guarding an eye switch, which will open the wall leading back to the starting area but will also change the floor to lava. Before continuing, make sure to take the megasphere and radiation shielding suit that have been revealed in the chaingunners' alcoves.

Skull keys
Head north into the brick hallway again; this time, the floor will drop and put you in a room with knights to the south (and chaingunners to the north on Hurt Me Plenty or higher. Take the radiation suit in the north-west corner if you need it, then follow a lava tunnel north to get back outside and face some revenants on the other side of a wooden wall. Drop into the pit below and walk east into a stone passage, then go north and west to see a silver switch ahead that lowers the wooden wall, allowing you to ride it up to the yellow skull key and another radiation suit. Go into the stone passage again and head up some steps to a cavern with shotgun guys and/or a chaingunner, press the skull switch here to lower the nearby bars then follow the lava tunnel back to the previous area and head south to a locked switch. Flip the switch to open the door behind you and step past it to find a teleporter.

The teleporter will send you back to the junction near the courtyard, where a cyberdemon has teleported to the center platform. Go back up to the yellow key door and open it to get back to the raised walkway, then follow this south until you get back to the compartment that had the knights and rocket launcher; the wall here has lowered, revealing the invisible bridge area from Well of Souls. As soon as you enter this area, which is guarded by revenants and cacodemons, look east and shoot the silver computer panel visible through a window, which will raise markers showing where the bridge is located, then step across it and flip the switch on the other side to lower the plinth holding the red skull key. Now go back to where you found the blue keycard and open the large door here to find a demon guarding a skull switch, which requires the red skull key to use and reveals a lift going down to a room full of teleporter pads.

The room contains an arch-vile and one or more barons of Hell; you can kill them using your weapons, or press the skull switches on the walls to reveal teleporters that go to the white pads, allowing you to telefrag your enemies. Press the north switch on the east wall to get to the center pad holding the blue skull key, then go back to where you found the red skull key and open the door here to find a satyr switch that will raise the floor, taking you up to the exit teleporter that goes to.

Secret exit
Drop into the trench in the exit room and go to the north-west end to find a skull switch; pressing it raises a platform back in the courtyard between the walkway and the cyberdemon's pen. Use this platform to make a running jump into the pen and step on the teleporter inside to go to.

Other points of interest
To get the BFG9000 in the blue skull key room, press the middle switch on the east wall to lower its pad for a few seconds, then run to collect the weapon before it rises again.

Secrets

 * 1) Along the walkway in the Human BBQ portion of the map, when you open the east compartment with chaingunners, jump to that compartment and press on the moss-covered wall in the back to find an armor. (sector 64)

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on April 3, 2022.

Things
This level contains the following numbers of things per skill level:

Trivia

 * This level was added with Part 3 of Jenesis.
 * The west side of this level is based on TNT: Evilution's, while the east and south sides are based on The Plutonia Experiment's.